Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature
Existing studies of the recent warming hiatus over land are primarily based on the average of daily minimum and maximum temperatures (T2). This study compared regional warming rates of mean temperature based on T2 and T24 calculated from hourly observations available from 1998 to 2013. Both T2 and T...
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ftpubmed:oai:pubmedcentral.nih.gov:4987647 2023-05-15T14:57:16+02:00 Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature Zhou, Chunlüe Wang, Kaicun 2016-08-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4987647/ http://www.ncbi.nlm.nih.gov/pubmed/27531421 https://doi.org/10.1038/srep31789 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4987647/ http://www.ncbi.nlm.nih.gov/pubmed/27531421 http://dx.doi.org/10.1038/srep31789 Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep31789 2016-09-04T00:22:51Z Existing studies of the recent warming hiatus over land are primarily based on the average of daily minimum and maximum temperatures (T2). This study compared regional warming rates of mean temperature based on T2 and T24 calculated from hourly observations available from 1998 to 2013. Both T2 and T24 show that the warming hiatus over land is apparent in the mid-latitudes of North America and Eurasia, especially in cold seasons, which is closely associated with the negative North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) and cold air propagation by the Arctic-original northerly wind anomaly into mid-latitudes. However, the warming rates of T2 and T24 are significantly different at regional and seasonal scales because T2 only samples air temperature twice daily and cannot accurately reflect land-atmosphere and incoming radiation variations in the temperature diurnal cycle. The trend has a standard deviation of 0.43 °C/decade for T2 and 0.41 °C/decade for T24, and 0.38 °C/decade for their trend difference in 5° × 5° grids. The use of T2 amplifies the regional contrasts of the warming rate, i.e., the trend underestimation in the US and overestimation at high latitudes by T2. Text Arctic North Atlantic North Atlantic oscillation PubMed Central (PMC) Arctic Scientific Reports 6 1 |
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Article Zhou, Chunlüe Wang, Kaicun Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature |
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Article |
description |
Existing studies of the recent warming hiatus over land are primarily based on the average of daily minimum and maximum temperatures (T2). This study compared regional warming rates of mean temperature based on T2 and T24 calculated from hourly observations available from 1998 to 2013. Both T2 and T24 show that the warming hiatus over land is apparent in the mid-latitudes of North America and Eurasia, especially in cold seasons, which is closely associated with the negative North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) and cold air propagation by the Arctic-original northerly wind anomaly into mid-latitudes. However, the warming rates of T2 and T24 are significantly different at regional and seasonal scales because T2 only samples air temperature twice daily and cannot accurately reflect land-atmosphere and incoming radiation variations in the temperature diurnal cycle. The trend has a standard deviation of 0.43 °C/decade for T2 and 0.41 °C/decade for T24, and 0.38 °C/decade for their trend difference in 5° × 5° grids. The use of T2 amplifies the regional contrasts of the warming rate, i.e., the trend underestimation in the US and overestimation at high latitudes by T2. |
format |
Text |
author |
Zhou, Chunlüe Wang, Kaicun |
author_facet |
Zhou, Chunlüe Wang, Kaicun |
author_sort |
Zhou, Chunlüe |
title |
Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature |
title_short |
Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature |
title_full |
Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature |
title_fullStr |
Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature |
title_full_unstemmed |
Spatiotemporal Divergence of the Warming Hiatus over Land Based on Different Definitions of Mean Temperature |
title_sort |
spatiotemporal divergence of the warming hiatus over land based on different definitions of mean temperature |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4987647/ http://www.ncbi.nlm.nih.gov/pubmed/27531421 https://doi.org/10.1038/srep31789 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4987647/ http://www.ncbi.nlm.nih.gov/pubmed/27531421 http://dx.doi.org/10.1038/srep31789 |
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Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
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https://doi.org/10.1038/srep31789 |
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Scientific Reports |
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